diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/OdfToOafMapper.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/OdfToOafMapper.java
index 6f1236fff..1b9e47408 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/OdfToOafMapper.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/OdfToOafMapper.java
@@ -179,7 +179,7 @@ public class OdfToOafMapper extends AbstractMdRecordToOafMapper {
 			url.add(HTTP_DOI_PREIFX + ((Node) o).getText().trim());
 		}
 		for (final Object o : doc
-				.selectNodes("//*[local-name()='alternateIdentifier' and ./@alternateIdentifierType='Handle']")) {
+			.selectNodes("//*[local-name()='alternateIdentifier' and ./@alternateIdentifierType='Handle']")) {
 			url.add(HTTP_HANDLE_PREIFX + ((Node) o).getText().trim());
 		}
 		for (final Object o : doc.selectNodes("//*[local-name()='identifier' and ./@identifierType='Handle']")) {
diff --git a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java
index 67bfe40db..9e7733123 100644
--- a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java
+++ b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java
@@ -928,7 +928,8 @@ class MappersTest {
 
 	@Test
 	void testROHub2() throws IOException, DocumentException {
-		final String xml = IOUtils.toString(Objects.requireNonNull(getClass().getResourceAsStream("rohub-modified.xml")));
+		final String xml = IOUtils
+			.toString(Objects.requireNonNull(getClass().getResourceAsStream("rohub-modified.xml")));
 		final List<Oaf> list = new OdfToOafMapper(vocs, false, true).processMdRecord(xml);
 		System.out.println("***************");
 		System.out.println(new ObjectMapper().writeValueAsString(list));
diff --git a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MigrateDbEntitiesApplicationTest.java b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MigrateDbEntitiesApplicationTest.java
index 727f4aae1..27304ec06 100644
--- a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MigrateDbEntitiesApplicationTest.java
+++ b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MigrateDbEntitiesApplicationTest.java
@@ -16,7 +16,6 @@ import java.util.Objects;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
-import eu.dnetlib.dhp.schema.common.ModelConstants;
 import org.apache.commons.io.IOUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.junit.jupiter.api.BeforeEach;
diff --git a/dhp-workflows/dhp-graph-provision/src/test/java/eu/dnetlib/dhp/oa/provision/IndexRecordTransformerTest.java b/dhp-workflows/dhp-graph-provision/src/test/java/eu/dnetlib/dhp/oa/provision/IndexRecordTransformerTest.java
index be5dda411..e0fbb2a2f 100644
--- a/dhp-workflows/dhp-graph-provision/src/test/java/eu/dnetlib/dhp/oa/provision/IndexRecordTransformerTest.java
+++ b/dhp-workflows/dhp-graph-provision/src/test/java/eu/dnetlib/dhp/oa/provision/IndexRecordTransformerTest.java
@@ -85,7 +85,7 @@ public class IndexRecordTransformerTest {
 	public void testRiunet() throws IOException, TransformerException {
 
 		final XmlRecordFactory xmlRecordFactory = new XmlRecordFactory(contextMapper, false,
-				XmlConverterJob.schemaLocation);
+			XmlConverterJob.schemaLocation);
 
 		final Publication p = load("riunet.json", Publication.class);
 
@@ -95,7 +95,6 @@ public class IndexRecordTransformerTest {
 		testRecordTransformation(record);
 	}
 
-
 	@Test
 	public void testForEOSCFutureDataTransferPilot() throws IOException, TransformerException {
 		final String record = IOUtils.toString(getClass().getResourceAsStream("eosc-future/data-transfer-pilot.xml"));
@@ -129,8 +128,6 @@ public class IndexRecordTransformerTest {
 		testRecordTransformation(record);
 	}
 
-
-
 	@Test
 	void testDoiUrlNormalization() throws MalformedURLException {